3·2
Installation
and
Configuration
Portable
PLUS
Computer
Peripheral devices are installed by connecting
them
to one of the
I/O
receptacles
at
the back of the
computer (figure 3·1):
•
HP
-
IL
devices are connected in series between the computer's IN
and
OUT receptacles using HP-IL
cables. Cables are keyed to ensure .correct polarity. All
Hp·IL
devices must be turned
on
for the
HP-IL interface to operate.
•
One
serial device can be connected to the serial interface receptacle using a serial interface cable.
• A
phone
line can be connected to the (optional) HP 82983A direct-connect modem receptacle using
a cable with a standard modular telephone plug. (The Federal Communications Commission re-
quires specific procedures for installing
and
operating equipment that uses public communications
lines. These procedures are described in the modem owner's manual.)
Cables for connecting HP-
IL
and
serial devices
to
the computer are listed in section 1.4.
3.3
Functional Verification
The built-in diagnostic tests verify proper operation of the computer's basic functions.
Note:
Be
sure you back
up
Electronic disc RAM
(drive"
A')
before running the
RAM
test
or
the Software/Memory Drawer test; these tests destroy some
of
the contents of
drive'
A',
even
though the directory
and
files appear to be intact. Later, format
drive'
A'
and
reload its
contents.
Perform the tests as follows:
1.
Turn off the computer by pressing
@)
in the main
PAM
screen, if present; otherwise, press
and
hold
the contrast key @ for approximately 12 seconds.
2.
Start the built-in diagnostic test by holding
down
the (
Shift)
and
( Extend Char) keys, then press
and
hold
@)
for 1 second, then release all three keys.
It
is
sometimes necessary
to
press the contrast
key
CID
in addition, to
turn
on
the computer.
(If
the test menu doesn't appear, the system isn't
operating properly.)
3. Perform all of the built-in tests by pressing the
C1D
special-function
key.
The HP-IL test requires either that you connect a good HP-IL cable between the computer's
HP
-
IL
IN
and
OUT receptacles,
or
that you connect the computer
and
one
or more devices (all
turned
on) in a loop. (Refer to section 3.2 for information
on
connecting HP-IL devices.)
For a good unit, all tests should indicate "ok". An error message
or
failure code indicates a test
didn't
pass
and
that
service is required.
The
built-in
diagnostic
tests
are
the
only
tests
available
to
the
customer.
These built-in diagnostic tests
do
not
test
the
entire unit. More extensive diagnostic tests are provided
on
the service disc, which is used for troubleshooting. (Refer to chapter 8 for additional information.)
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